Foundry flask



H. c. DRUMM FOUNDRY FLASK June 19, 1923.

Filed Aug. 17 1922 gvwewtoz Gm: mm

Patented June 19, 1923.

UNlTED STATES HERBERT o. DRUMM, OE C NTON, OHIO, ASSIGNOR To THE UNIONMETAL MANUEAO TURINGCOMPANY, OE OANTON, OHIO, A CORPORATION OF OHIO.

PATENT orat on,

FOUNDRY FLASK.

Application filed August 17, 1922. Serial No. 582,417.

To all whom it may concern:

Be it known that I, HERBERT C. DRUMM, a citizen of the United States,residing at Canton, in the county of Stark and State of Ohio, haveinvented a new and useful Foundry Flask, of which the following is aspecification.

This invention relates to improvements in foundry flasks constructed ofsheet metal and has more especial reference to a flask of this characterformed of corrugated sheet metal and provided with corrugatedreinforcing plates surrounding the body portion Of the flask.

The usual form of foundry flask comprises two similar sections generallyknown as the cope and drag, provided with means for attaching the twosections together. These flasks were commonly formed of wood, but Owingto the molten metal and burning gases, which are necessarily broughtinto contact with the flasks, it has been found desirable to constructthe sections of the flasks of sheet metal.

Experience has proven, however, that flasks formed of sheet metal do nothave the required strength and rigidity to withstand the rough usage towhich, the flasks are subjected, this being especially true of largerflasks such as are used for molding heavy castings.

The objects of the invention are to provide a sheet metal foundry flaskhaving reinforcing side plates and end plates connected to the bodyportion of the flask and to each other, both the body portion of theflask and the reinforcing plates being preferably provided withoppositely disposed, longitudinal corrugations for stiffening thestructure and preventing warping or distortion of the flask sections inuse. I

The above and other objects may be attained by constructing the flask asillustrated in the accompanying drawing, in which I Figure l is a planview Of a flask section embodying the invention;

Fig. 2, a section on the line 2-2, Fig. 1; and

Fig. 3, a section on the line 3-8, Fig. 1.

Similar numerals refer to similar parts throughout the drawing.

Referring to the construction illustrated in the accompany drawing, thebody portion 1 of the flask section is formed of one or more. sheets ofmetal, the adjoining ends thereof being connected together as at 2 in.any suitable and well known manner. This body portion of the section ispreferably rectangular and provided with the spaced, longitudinalcorrugations 3 which may be of V-shape as "illustrated and which extendinward.

The upper and lOWeI edges f th section maybe bent inwardand' outwardrespectively, as shown at 41 and 5,-{The section illustrated in thedrawing is thelower or drag section, and it will'be understood that theupper or cope. section is of the same form, being inverted, however,when it is placed upon the drag section.

'A reinforcing sheet 6 is rivetedto each side wall of the body portionas at 7, each of these sheets being of substantially thew width of theside wall, but of considerably greater length and being preferably pro-Vided with outwardly disposed, longitudinalcorrugations 8 registeringwith the con rugations S of the body portion of the flask. 5 1

U-shaped reinforcing sheets 9 are connect"- ed to the end walls of thebody portion as by the rivets 10, these sheets being of the same widthas the sheets 6, the outturned ends 11 thereof terminating at theextremities of the side sheets 6' and being riveted thereto as at 12.

The endsheets 9 are provided with horitrated in Fig. 2, providinghandles by means of which the flasks may be carried either manually orwith a crane or the like.

The usual pin lugs 15 are provided at the intersecting edges of the copeand drag sections, being arranged to register with each other to receivethe usual guide pin by means of which the flask sections are ordi narilyconnected together when in use. These pin lugs may be attached to theend walls of each section as by the rivets 16.

It will be evident from the above that a construction of reinforcedsheet metal flask is provided which will withstand the rough usage towhich foundry flasks are necessarily subjected, and which will not Warpor become distorted from the weight of the sand and castings placedtherein inthe operation of molding, whileat the same time, the weight ofthe flask is not increased sufli-ciently to form an objection to thereinforcement.

'I claim: v 1. A foundryflask comprising a sheet metal body portion,reinforcing sheets connected to. the side walls thereof and reinforcingsheets connected to the endwalls'of the body portion and to said sidereinforcing sheets, certain of, said reinforcing sheets being of greaterlength than the corresponding walls of the flask and extended outwardbeyond said flask walls at each end.

2. vA foundry flask comprising a sheet metal body portion, reinforcingsheetsconnected to the side walls, thereof and reinforcing sheetsconnected to the end walls of the body portion and to said side rein-;forcing sheets, said side reinforcing sheets being of greater: lengththan thebody portion of the flask. s

3 A foundry flask comprising a sheet metal ,body portion, reinforcingsheets connected to the side walls thereof and reinforcing sheetsconnected to theend walls of the-body portion and to said sidereinforcing sheets, said side, reinforcingsheets being of greater lengththan the'body portion of the fla-sk, the end portions of said sidereinforcing sheets being cut away forming handles. v i

c 4. A "foundry flask comprising a sheet metal body portion, reinforcingsheets connectedto the side walls thereof and reinforcing sheetsconnected to the end walls of the body portion and to said sidereinforcing sheets, said end reinforcing sheets having outtnrned ends.

5 A foundry flask comprising a sheet metal body portion, reinforcingsheets con-.

neotedtothe side walls thereof and reinforcing sheets connected to theend walls of the ,body portion and to said side re nforcing vsheets,said end reinforcing sheets having outturned ends cutaway to formhandles.

6. A foundry flask comprising a sheet metal bodyfportion, reinforcingsheets connectedto the side walls thereofand reinforcing sheetsconnected to the end walls of the body portion and to said sidereinforcing sheets, said side reinforcing sheets being of greaterlengththan the sidewalls of the flask andtheend reinforcing sheetshaving outturned ends connected to the end portions ,of the sidereinforcing sheets.

7. ,A foundry flask comprising a sheet metal body portion, reinforcingsheets connectedfto the sidewalls thereof and reinforcingsheetsconnected to the end walls of the body portion and to said sidereinforcing sheets, said body portion and reinforcing sheets beingprovided with longitudinal corrugatlons.

8. A foundry flask comprising a sheet metal body portion, reinforcingsheetsconnected to the side walls thereof and reinforcing sheetsconnected to the end walls of the body portion and to saidsidereinforcing sheets, said SlCl'IGIIIfOIClHgShBGtS belng of greater lengththan the body portion of the flask, said body portion and reinforcing"sheets being provided with longitudinal corrugations. v

9. A foundry flask comprising a sheet metal body portion, reinforcingsheets connected to the side walls thereof and reinforcing sheetsconnected to the end walls of the body portion and to said'side:reinforcing sheets, said side reinforcing sheetsbeing of greater lengththan the body portion of they flask, the end portions of said sidereinforcing sheets being cut away forming handles, said body portion andreinforcing sheets being provided with longitudinal corrugations. I

10. A foundry flask comprising a sheet metal body portion and a sheetmetal reinforcement surrounding the body portion and connected therewithand provided with: in-

tegral handle 1 portions projecting beyond dles. I i

13. A foundry flask comprising .a sheet metal body portion and asheetmetal reinforcement surrounding the body portion and.

connected therewith and provided with por tions projecting beyond theextremities ,of

the body portion, the body portion and reine, forcement being providedwith oppositely disposed,- longitudinal corrugations,

14, A foundry flask comprising awsheet metal body portion, reinforcingsheets con nected to the side walls thereofand rein-, forcing sheetsconnected tothe :end WELllS of the body portion and to said sidereinforcing sheets, said end reinforcing sheets having outturned ends,said body portion and-reinforcing sheets beingprovided with longirtudinal corrugatlons. i

15. A foundryflask comprisingai sheet I metal body portion, reinforcingsheets connected to the side walls thereof and reinforcing sheetsconnected to the end walls of the body portion and to said sidereinforcing sheets, said end reinforcingsheets having outturned ends'cutaway to form handles,-'

said body portion and reinforcing sheets being provided withlongitudinal corrugations.

16. A foundry flask comprising a sheet metal body portion, reinforcingsheets connected to the side walls thereof and reinforcing sheetsconnected to the end Walls of the body portion and to said sidereinforcing sheets, said side reinforcing sheets being of greater lengththan the side walls of they flask and the end reinforcing sheets havingoutturned ends connected to the end portions of the side reinforcing,sheets, said body portion and reinforcing sheets being provided withlongitudinal corrugations.

- 17. A foundry flask comprising a sheetmetal body portion andreinforcing sheets connected to the walls thereof and to each other,certain of said reinforcing sheets being of greater length than theflask walls 20 to which they are connected and extended outwardbeyond'said flask walls at each end.

HERBERT'C. DRUM

